Title

What can ants tell us about collective behavior during a natural catastrophe?

SelectedWorks Author Profiles:

Deby L. Cassill

Document Type

Article

Publication Date

2015

Date Issued

January 2015

ISSN

1387-6996

Abstract

The fire ant, Solenopsis invicta, has successfully invaded and colonized ecosystems worldwide. Like humans, fire ants build permanent domiciles to house family members, establish well-defined territories for foraging and fight to the death when invading neighbors breach the borders. One of the more striking behaviors of fire ants is their ability to form a living raft when springtime rains flood their domiciles. What are the survival benefits, if any, to collective behavior during a flood? To address this question, we quantified the survival of individuals as solitary swimmers compared to cooperative rafters. We found that large workers and matriarchs survived equally well as solitary swimmers or rafters. In contrast, small workers drowned whether they were solitary swimmers or rafters. However, when rafting with large workers or matriarchs, the mortality of small workers declined three-fold. We propose a behavior phenotype classification scheme to catalog the diverse behaviors observed in this series of experiments. Although the ultimate goal of rafting behavior by fire ant workers is to protect their matriarch, the proximate goal for the vast majority of fire ants is to save themselves first and to save others if the opportunity arises.

Comments

Abstract only. Full-text article is available through licensed access provided by the publisher. Published in .Journal of Bioeconomics, 17, 255-270. doi: 10.1007/s10818-015-9195-2. Members of the USF System may access the full-text of the article through the authenticated link provided.

Language

en_US

Publisher

Springer New York LLC

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.